Just a warning - I had a bad experience while trying to buy a Zeiss Planar 100 f/2.8, and noticed that the lens is back on EBay (Item # 1377641160).

The lens is a total dog. I sent it to Fred Lustig for repair and discovered that the "tiny chip" was a huge divet and the "complete shutter" had been stripped of parts. I was lucky to get my bid money back, but the guy refused to refund his inflated shipping. Altogether, it cost me about $30 in shipping. (Back and forth to the seller, back and forth to Fred.) All things considered, I probably got off cheap.

The seller has since modified the description of the shutter, but according to Fred, it's a total loss. Beware of this one.